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<H2>
<BR>
14.4.2 AU_write Objects 
</H2>

<P>
AU_write objects, as returned by <tt class="function">open()</tt> above, have the
following methods:

<P>
<dl><dt><b><a name='l2h-2868'><tt class='method'>setnchannels</tt></a></b> (<var>n</var>)
<dd>
Set the number of channels.
</dl>

<P>
<dl><dt><b><a name='l2h-2869'><tt class='method'>setsampwidth</tt></a></b> (<var>n</var>)
<dd>
Set the sample width (in bytes.)
</dl>

<P>
<dl><dt><b><a name='l2h-2870'><tt class='method'>setframerate</tt></a></b> (<var>n</var>)
<dd>
Set the frame rate.
</dl>

<P>
<dl><dt><b><a name='l2h-2871'><tt class='method'>setnframes</tt></a></b> (<var>n</var>)
<dd>
Set the number of frames. This can be later changed, when and if more 
frames are written.
</dl>

<P>
<dl><dt><b><a name='l2h-2872'><tt class='method'>setcomptype</tt></a></b> (<var>type, name</var>)
<dd>
Set the compression type and description.
Only <code>'NONE'</code> and <code>'ULAW'</code> are supported on output.
</dl>

<P>
<dl><dt><b><a name='l2h-2873'><tt class='method'>setparams</tt></a></b> (<var>tuple</var>)
<dd>
The <var>tuple</var> should be <code>(<var>nchannels</var>, <var>sampwidth</var>,
<var>framerate</var>, <var>nframes</var>, <var>comptype</var>, <var>compname</var>)</code>, with
values valid for the <tt class="method">set*()</tt> methods.  Set all parameters.
</dl>

<P>
<dl><dt><b><a name='l2h-2874'><tt class='method'>tell</tt></a></b> ()
<dd>
Return current position in the file, with the same disclaimer for
the <tt class="method">AU_read.tell()</tt> and <tt class="method">AU_read.setpos()</tt> methods.
</dl>

<P>
<dl><dt><b><a name='l2h-2875'><tt class='method'>writeframesraw</tt></a></b> (<var>data</var>)
<dd>
Write audio frames, without correcting <var>nframes</var>.
</dl>

<P>
<dl><dt><b><a name='l2h-2876'><tt class='method'>writeframes</tt></a></b> (<var>data</var>)
<dd>
Write audio frames and make sure <var>nframes</var> is correct.
</dl>

<P>
<dl><dt><b><a name='l2h-2877'><tt class='method'>close</tt></a></b> ()
<dd>
Make sure <var>nframes</var> is correct, and close the file.

<P>
This method is called upon deletion.
</dl>

<P>
Note that it is invalid to set any parameters after calling 
<tt class="method">writeframes()</tt> or <tt class="method">writeframesraw()</tt>. 

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